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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Norton Water Department

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

MORE ABOUT THIS CONTAMINANT

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND100ND
2014ND80ND
2015ND80ND
2016ND80ND
2017ND70ND
2018ND80ND
2019ND70ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Result
2013-04-01ND
2013-04-01ND
2013-04-01ND
2013-04-02ND
2013-04-02ND
2013-10-07ND
2013-10-07ND
2013-10-08ND
2013-10-08ND
2013-10-09ND
2014-03-26ND
2014-05-20ND
2014-06-25ND
2014-06-25ND
2014-06-25ND
2014-06-25ND
2014-08-27ND
2014-11-19ND
2015-03-26ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-06-11ND
2015-09-21ND
2015-12-09ND
2016-02-25ND
2016-06-24ND
2016-06-24ND
2016-06-24ND
2016-06-24ND
2016-06-24ND
2016-09-12ND
2016-11-17ND
2017-03-16ND
2017-05-30ND
2017-05-30ND
2017-05-30ND
2017-05-30ND
2017-05-30ND
2017-12-18ND
2018-03-28ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-09-05ND
2018-11-28ND
2019-02-14ND
2019-05-16ND
2019-05-16ND
2019-05-16ND
2019-05-16ND
2019-06-04ND
2019-08-27ND